Across
- 4. perpendicular
- 6. matter wave travels through
- 7. Disturbance that transfer energy
- 10. transverse and longitudinal
- 11. distance between crests
- 12. bottom of wave
- 13. crest and resting position
Down
- 1. empty space
- 2. number of times wave repeat.
- 3. moves through matter
- 5. distance travelled in a given time.
- 8. parallel
- 9. travel without medium.